Glaive wurm

The glaive wurm, or glave wurm, is a semi-sentient[1] parasite utilized by mutalisks. Mutalisks attack by firing the parasites[2] with great force.[1] The parasites may bounce off and strike multiple targets while disintegrating explosively,[2] able to ravage entire armies.[3]

The glaive wurms are launched from a mutalisk's modified ovipositor.[4] They trace their origins to the glave parasite, which bonded with the mantis screamers prior to their assimilation by the zerg.[1]